video: test: Adjust order of file closure

Close the file earlier to hopefully fix a Coverity error.

Reported-by: Coverity (CID: 134901)

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/test/dm/video.c b/test/dm/video.c
index de22328..4d000fa 100644
--- a/test/dm/video.c
+++ b/test/dm/video.c
@@ -249,9 +249,9 @@
 	fd = os_open(fname, OS_O_RDONLY);
 	ut_assert(fd >= 0);
 	size = os_read(fd, buf, buf_size);
+	os_close(fd);
 	ut_assert(size >= 0);
 	ut_assert(size < buf_size);
-	os_close(fd);
 	*addrp = addr;
 
 	return 0;